the american people in their couches and their living rooms, and you know, governor romney will be there. that's not going to be the president's primary concern. >> but as you know, some interesting moments, and things people talk about, literally, decades later, after debates, is you know, maybe they're not necessarily zingers, but they're moments. i'm going to play a couple for you. >> sure. >> from past debates. listen. >> there you go again. i want you to know that also, i will not make age an issue of this campaign. i am not going to exploit, for political purposes, my opponent's youth and inexperience. >> senator, i served with jack kennedy. i knew jack kennedy. jack kennedy was a friend of mine. senator, you're no jack kennedy. >> in both of those instances, the blow was fatal. and maybe it didn't show up in the polling right away, but people had this sense that what had happened in that moment was a metaphor for who was the better fighter in the debate. and that could be problematic, couldn't it? >> well, it absolutely could be. i mean there are other moments in debates, too. i'm sure